The number of 5 people groups that can be selected from 9 people when two particular persons are not to be in thesame group is

Let A = the number of ways of selecting a committee of 5 from a group of 9 persons. B = the number of permutations of the word PRELEPCO taken all at a time. C = the number of ways in which 8 people can be arranged in a line if two particular people must stand next to each other. The value of (A B)/C equals 63 (2) 126 (3) 360 (4) 120

A committee of 5 is to be chosen from a group of 9 people.Number of ways in which it can be formed if two particular persons either serve together or not at all and two other particular persons refuse to serve with each other,is

Direction Read the following passage and answer the questions based on it. Read the passage given below and answer the question that follow: In a club of 30 people, all of them belong to at least one group - Chess, Drama and Art. 6 people belong only to the Art group. 5 people belong to all the three groups. 2 people have joined the Chess and the Art group but not the Drama group. 15 people belong to the Art group.2 people have joined only the Chess group. 3 people have joined only the Drama group. How many people have joined the Chess and the Drama group but not the Art group? (A) 12 (B) 10 (C ) 15 (D) 13

In how many ways can 7 people be arranged at round table, so that two particular persons be together?

The number of ways in which 9 persons can be divided into three equal groups is

The number of ways in which 9 persons can be divided into three equal groups is